In this task, you are given a question and an answer. Answer "Yes" if the given answer correctly answers the question, otherwise answer "No".

how many vehicles are registered in the us, Answer: Overall, there were an estimated 254.4 million registered passenger vehicles in the United States according to a 2007 DOT study.
Yes

what is a book index, Answer: An index (plural: indexes) is a list of words or phrases ('headings') and associated pointers ('locators') to where useful material relating to that heading can be found in a document.
Yes

how big or small a visible light can get, Answer: A light-adapted eye generally has its maximum sensitivity at around 555 nm (540 THz), in the green region of the optical spectrum (see: luminosity function ).

No

